US3217212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor pin junction microwave limiter
Assignee: AT&T Inc
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Filing: 1961-05-26
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Granted: 1965-11-09
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Robert M Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02; H03G11/025; H02; H02H; H02H9/00; H02H9/04; H02H9/044; H10; H10D; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S257/00; Y10S257/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SEMICONDUCTOR STRUCTURE INCLUDING A FIRST AND A SECOND LAYER OF SEMICONDUCTOR MATERIAL SEPARATED BY A HIGH RESISTANCE LAYER OF SEMICONDUCTOR MATERIAL, A SEPARATE LOW RESISTANCE CONTACT TO EACH OF SAID FIRST AND SECOND LAYERS, SAID STRUCTURE BEING CHARACTERIZED IN THAT EACH OF SAID FIRST AND SECOND LAYERS INCLUDES A PLURALITY OF PTYPE AND N-TYPE CONDUCTIVITY REGIONS, SAID LOW RESISTANCE CONTACTS BEING COMMON TO EACH OF SAID P-TYPE AND N-TYPE CONDUCTIVITY REGIONS.
Claim 2
Dependent Claim
72 words
A SEMICONDUCTOR STRUCTURE INCLUDING A FIRST AND A SECOND LAYER OF SEMICONDUCTOR MATERIAL SEPARATED BY A HIGH RESISTANCE LAYER OF SEMICONDUCTOR MATERIAL, A SEPARATE LOW RESISTANCE CONTACT TO EACH OF SAID FIRST AND SECOND LAYERS, SAID STRUCTURE BEING CHARACTERIZED IN THAT EACH OF SAID FIRST AND SECOND LAYERS INCLUDES A PLURALITY OF PTYPE AND N-TYPE CONDUCTIVITY REGIONS, SAID LOW RESISTANCE CONTACTS BEING COMMON TO EACH OF SAID P-TYPE AND N-TYPE CONDUCTIVITY REGIONS.
References Cited (Backward Citations)
US2883313A
Cited
US2840497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |